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   <div id="projectbrief">c++ math library</div>
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<div class="title">visualize_application.cpp</div>  </div>
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<a href="visualize__application_8cpp.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno">    1</span>&#160;﻿</div>
<div class="line"><a name="l00002"></a><span class="lineno">    2</span>&#160;<span class="preprocessor">#include &quot;<a class="code" href="__gbmath_8h.html" title="MAIN INCLUDE HEADER. ">_gbmath.h</a>&quot;</span></div>
<div class="line"><a name="l00003"></a><span class="lineno">    3</span>&#160;</div>
<div class="line"><a name="l00004"></a><span class="lineno">    4</span>&#160;<span class="preprocessor">#ifdef WIN32</span></div>
<div class="line"><a name="l00005"></a><span class="lineno">    5</span>&#160;<span class="preprocessor"></span><span class="preprocessor">#ifdef GBMATH_USE_VISUALIZE_APPLICATION</span></div>
<div class="line"><a name="l00006"></a><span class="lineno">    6</span>&#160;<span class="preprocessor"></span></div>
<div class="line"><a name="l00007"></a><span class="lineno">    7</span>&#160;<span class="preprocessor">#include &quot;<a class="code" href="visualize__application_8h.html" title="Visualize math values through OpenGL . ">visualize_application.h</a>&quot;</span></div>
<div class="line"><a name="l00008"></a><span class="lineno">    8</span>&#160;</div>
<div class="line"><a name="l00009"></a><span class="lineno">    9</span>&#160;<span class="preprocessor">#pragma warning( push )</span></div>
<div class="line"><a name="l00010"></a><span class="lineno">   10</span>&#160;<span class="preprocessor"></span><span class="preprocessor">#pragma warning( disable : 4996 )</span></div>
<div class="line"><a name="l00011"></a><span class="lineno">   11</span>&#160;<span class="preprocessor"></span></div>
<div class="line"><a name="l00012"></a><span class="lineno">   12</span>&#160;</div>
<div class="line"><a name="l00013"></a><span class="lineno">   13</span>&#160;<span class="keyword">namespace </span>gbmath</div>
<div class="line"><a name="l00014"></a><span class="lineno">   14</span>&#160;{</div>
<div class="line"><a name="l00015"></a><span class="lineno">   15</span>&#160;</div>
<div class="line"><a name="l00016"></a><span class="lineno">   16</span>&#160;<span class="keyword">namespace </span>detail_visappl</div>
<div class="line"><a name="l00017"></a><span class="lineno">   17</span>&#160;{</div>
<div class="line"><a name="l00018"></a><span class="lineno">   18</span>&#160;</div>
<div class="line"><a name="l00019"></a><span class="lineno">   19</span>&#160; <span class="comment">//===============================================================</span></div>
<div class="line"><a name="l00020"></a><span class="lineno">   20</span>&#160;</div>
<div class="line"><a name="l00021"></a><span class="lineno">   21</span>&#160; </div>
<div class="line"><a name="l00022"></a><span class="lineno">   22</span>&#160;</div>
<div class="line"><a name="l00023"></a><span class="lineno">   23</span>&#160;</div>
<div class="line"><a name="l00024"></a><span class="lineno">   24</span>&#160;<span class="keyword">static</span> HDC          hDC=NULL;       <span class="comment">// Private GDI Device Context</span></div>
<div class="line"><a name="l00025"></a><span class="lineno">   25</span>&#160;<span class="keyword">static</span> HGLRC        hRC=NULL;       <span class="comment">// Permanent Rendering Context</span></div>
<div class="line"><a name="l00026"></a><span class="lineno">   26</span>&#160;<span class="keyword">static</span> HWND         hWnd=NULL;      <span class="comment">// Holds Our Window Handle</span></div>
<div class="line"><a name="l00027"></a><span class="lineno">   27</span>&#160;<span class="keyword">static</span> HINSTANCE    hInstance = 0;      <span class="comment">// Holds The Instance Of The Application</span></div>
<div class="line"><a name="l00028"></a><span class="lineno">   28</span>&#160;</div>
<div class="line"><a name="l00029"></a><span class="lineno">   29</span>&#160;<span class="keyword">static</span> GLuint   base = 0;               <span class="comment">// Base Display List For The Font Set</span></div>
<div class="line"><a name="l00030"></a><span class="lineno">   30</span>&#160;<span class="keyword">static</span> GLfloat  cnt1 = 0.0f;                <span class="comment">// 1st Counter Used To Move Text &amp; For Coloring</span></div>
<div class="line"><a name="l00031"></a><span class="lineno">   31</span>&#160;<span class="keyword">static</span> GLfloat  cnt2 = 0.0f;                <span class="comment">// 2nd Counter Used To Move Text &amp; For Coloring</span></div>
<div class="line"><a name="l00032"></a><span class="lineno">   32</span>&#160;</div>
<div class="line"><a name="l00033"></a><span class="lineno">   33</span>&#160;<span class="keyword">static</span> <span class="keywordtype">bool</span> keys[256];          <span class="comment">// Array Used For The Keyboard Routine</span></div>
<div class="line"><a name="l00034"></a><span class="lineno">   34</span>&#160;<span class="keyword">static</span> <span class="keywordtype">bool</span> active=TRUE;        <span class="comment">// Window Active Flag Set To TRUE By Default</span></div>
<div class="line"><a name="l00035"></a><span class="lineno">   35</span>&#160;<span class="keyword">static</span> <span class="keywordtype">bool</span> fullscreen=TRUE;    <span class="comment">// Fullscreen Flag Set To Fullscreen Mode By Default</span></div>
<div class="line"><a name="l00036"></a><span class="lineno">   36</span>&#160;</div>
<div class="line"><a name="l00037"></a><span class="lineno">   37</span>&#160;<span class="keyword">static</span> <span class="keywordtype">float</span>                g_time = 0.0f;</div>
<div class="line"><a name="l00038"></a><span class="lineno">   38</span>&#160;<span class="keyword">static</span> gbmath::drawer       g_drawer;</div>
<div class="line"><a name="l00039"></a><span class="lineno">   39</span>&#160;</div>
<div class="line"><a name="l00040"></a><span class="lineno">   40</span>&#160;<span class="keyword">static</span> visualize_application::OnResize  g_OnResize  = NULL;</div>
<div class="line"><a name="l00041"></a><span class="lineno">   41</span>&#160;<span class="keyword">static</span> <span class="keywordtype">void</span>*                            g_user_ptr = NULL;</div>
<div class="line"><a name="l00042"></a><span class="lineno">   42</span>&#160;</div>
<div class="line"><a name="l00043"></a><span class="lineno">   43</span>&#160;</div>
<div class="line"><a name="l00044"></a><span class="lineno">   44</span>&#160;LRESULT CALLBACK WndProc(HWND, UINT, WPARAM, LPARAM);    </div>
<div class="line"><a name="l00045"></a><span class="lineno">   45</span>&#160;</div>
<div class="line"><a name="l00046"></a><span class="lineno">   46</span>&#160;</div>
<div class="line"><a name="l00047"></a><span class="lineno">   47</span>&#160;<span class="keyword">inline</span> <span class="keyword">static</span> <span class="keywordtype">float</span> GetCurrSystemTime() </div>
<div class="line"><a name="l00048"></a><span class="lineno">   48</span>&#160;{</div>
<div class="line"><a name="l00049"></a><span class="lineno">   49</span>&#160;    LARGE_INTEGER tm, freq;   </div>
<div class="line"><a name="l00050"></a><span class="lineno">   50</span>&#160;    QueryPerformanceCounter(&amp;tm);</div>
<div class="line"><a name="l00051"></a><span class="lineno">   51</span>&#160;    QueryPerformanceFrequency(&amp;freq);</div>
<div class="line"><a name="l00052"></a><span class="lineno">   52</span>&#160;</div>
<div class="line"><a name="l00053"></a><span class="lineno">   53</span>&#160;    <span class="keywordflow">return</span>   (   ( (<span class="keywordtype">float</span>)tm.QuadPart ) / ( (<span class="keywordtype">float</span>)freq.QuadPart )   );</div>
<div class="line"><a name="l00054"></a><span class="lineno">   54</span>&#160;}</div>
<div class="line"><a name="l00055"></a><span class="lineno">   55</span>&#160;</div>
<div class="line"><a name="l00056"></a><span class="lineno">   56</span>&#160;<span class="keyword">static</span> GLvoid BuildFont(GLvoid)                             <span class="comment">// Build Our Bitmap Font</span></div>
<div class="line"><a name="l00057"></a><span class="lineno">   57</span>&#160;{</div>
<div class="line"><a name="l00058"></a><span class="lineno">   58</span>&#160;    HFONT   font;                                       <span class="comment">// Windows Font ID</span></div>
<div class="line"><a name="l00059"></a><span class="lineno">   59</span>&#160;    HFONT   oldfont;                                    <span class="comment">// Used For Good House Keeping</span></div>
<div class="line"><a name="l00060"></a><span class="lineno">   60</span>&#160;</div>
<div class="line"><a name="l00061"></a><span class="lineno">   61</span>&#160;    base = glGenLists(96);                              <span class="comment">// Storage For 96 Characters</span></div>
<div class="line"><a name="l00062"></a><span class="lineno">   62</span>&#160;</div>
<div class="line"><a name="l00063"></a><span class="lineno">   63</span>&#160;    font = CreateFontA( -24,                            <span class="comment">// Height Of Font</span></div>
<div class="line"><a name="l00064"></a><span class="lineno">   64</span>&#160;                        0,                              <span class="comment">// Width Of Font</span></div>
<div class="line"><a name="l00065"></a><span class="lineno">   65</span>&#160;                        0,                              <span class="comment">// Angle Of Escapement</span></div>
<div class="line"><a name="l00066"></a><span class="lineno">   66</span>&#160;                        0,                              <span class="comment">// Orientation Angle</span></div>
<div class="line"><a name="l00067"></a><span class="lineno">   67</span>&#160;                        FW_BOLD,                        <span class="comment">// Font Weight</span></div>
<div class="line"><a name="l00068"></a><span class="lineno">   68</span>&#160;                        FALSE,                          <span class="comment">// Italic</span></div>
<div class="line"><a name="l00069"></a><span class="lineno">   69</span>&#160;                        FALSE,                          <span class="comment">// Underline</span></div>
<div class="line"><a name="l00070"></a><span class="lineno">   70</span>&#160;                        FALSE,                          <span class="comment">// Strikeout</span></div>
<div class="line"><a name="l00071"></a><span class="lineno">   71</span>&#160;                        ANSI_CHARSET,                   <span class="comment">// Character Set Identifier</span></div>
<div class="line"><a name="l00072"></a><span class="lineno">   72</span>&#160;                        OUT_TT_PRECIS,                  <span class="comment">// Output Precision</span></div>
<div class="line"><a name="l00073"></a><span class="lineno">   73</span>&#160;                        CLIP_DEFAULT_PRECIS,            <span class="comment">// Clipping Precision</span></div>
<div class="line"><a name="l00074"></a><span class="lineno">   74</span>&#160;                        ANTIALIASED_QUALITY,            <span class="comment">// Output Quality</span></div>
<div class="line"><a name="l00075"></a><span class="lineno">   75</span>&#160;                        FF_DONTCARE|DEFAULT_PITCH,      <span class="comment">// Family And Pitch</span></div>
<div class="line"><a name="l00076"></a><span class="lineno">   76</span>&#160;                        <span class="stringliteral">&quot;Courier New&quot;</span>);                 <span class="comment">// Font Name</span></div>
<div class="line"><a name="l00077"></a><span class="lineno">   77</span>&#160;</div>
<div class="line"><a name="l00078"></a><span class="lineno">   78</span>&#160;    oldfont = (HFONT)SelectObject(hDC, font);           <span class="comment">// Selects The Font We Want</span></div>
<div class="line"><a name="l00079"></a><span class="lineno">   79</span>&#160;    wglUseFontBitmaps(hDC, 32, 96, base);               <span class="comment">// Builds 96 Characters Starting At Character 32</span></div>
<div class="line"><a name="l00080"></a><span class="lineno">   80</span>&#160;    SelectObject(hDC, oldfont);                         <span class="comment">// Selects The Font We Want</span></div>
<div class="line"><a name="l00081"></a><span class="lineno">   81</span>&#160;    DeleteObject(font);                                 <span class="comment">// Delete The Font</span></div>
<div class="line"><a name="l00082"></a><span class="lineno">   82</span>&#160;}</div>
<div class="line"><a name="l00083"></a><span class="lineno">   83</span>&#160;</div>
<div class="line"><a name="l00084"></a><span class="lineno">   84</span>&#160;<span class="keyword">static</span> GLvoid KillFont(GLvoid)                                  <span class="comment">// Delete The Font List</span></div>
<div class="line"><a name="l00085"></a><span class="lineno">   85</span>&#160;{</div>
<div class="line"><a name="l00086"></a><span class="lineno">   86</span>&#160;    glDeleteLists(base, 96);                            <span class="comment">// Delete All 96 Characters</span></div>
<div class="line"><a name="l00087"></a><span class="lineno">   87</span>&#160;}</div>
<div class="line"><a name="l00088"></a><span class="lineno">   88</span>&#160;</div>
<div class="line"><a name="l00089"></a><span class="lineno">   89</span>&#160;<span class="keyword">static</span> GLvoid glPrint(<span class="keyword">const</span> <span class="keywordtype">char</span> *fmt, ...)                 <span class="comment">// Custom GL &quot;Print&quot; Routine</span></div>
<div class="line"><a name="l00090"></a><span class="lineno">   90</span>&#160;{</div>
<div class="line"><a name="l00091"></a><span class="lineno">   91</span>&#160;    <span class="keywordtype">char</span>        text[256];                              <span class="comment">// Holds Our String</span></div>
<div class="line"><a name="l00092"></a><span class="lineno">   92</span>&#160;    va_list     ap;                                     <span class="comment">// Pointer To List Of Arguments</span></div>
<div class="line"><a name="l00093"></a><span class="lineno">   93</span>&#160;</div>
<div class="line"><a name="l00094"></a><span class="lineno">   94</span>&#160;    <span class="keywordflow">if</span> (fmt == NULL)                                    <span class="comment">// If There&#39;s No Text</span></div>
<div class="line"><a name="l00095"></a><span class="lineno">   95</span>&#160;        <span class="keywordflow">return</span>;                                         <span class="comment">// Do Nothing</span></div>
<div class="line"><a name="l00096"></a><span class="lineno">   96</span>&#160;</div>
<div class="line"><a name="l00097"></a><span class="lineno">   97</span>&#160;    va_start(ap, fmt);                                  <span class="comment">// Parses The String For Variables</span></div>
<div class="line"><a name="l00098"></a><span class="lineno">   98</span>&#160;        vsprintf(text, fmt, ap);                        <span class="comment">// And Converts Symbols To Actual Numbers</span></div>
<div class="line"><a name="l00099"></a><span class="lineno">   99</span>&#160;    va_end(ap);                                         <span class="comment">// Results Are Stored In Text</span></div>
<div class="line"><a name="l00100"></a><span class="lineno">  100</span>&#160;</div>
<div class="line"><a name="l00101"></a><span class="lineno">  101</span>&#160;    glPushAttrib(GL_LIST_BIT);                          <span class="comment">// Pushes The Display List Bits</span></div>
<div class="line"><a name="l00102"></a><span class="lineno">  102</span>&#160;    glListBase(base - 32);                              <span class="comment">// Sets The Base Character to 32</span></div>
<div class="line"><a name="l00103"></a><span class="lineno">  103</span>&#160;    glCallLists( (GLsizei)strlen(text), GL_UNSIGNED_BYTE, text);    <span class="comment">// Draws The Display List Text</span></div>
<div class="line"><a name="l00104"></a><span class="lineno">  104</span>&#160;    glPopAttrib();                                      <span class="comment">// Pops The Display List Bits</span></div>
<div class="line"><a name="l00105"></a><span class="lineno">  105</span>&#160;}</div>
<div class="line"><a name="l00106"></a><span class="lineno">  106</span>&#160;</div>
<div class="line"><a name="l00107"></a><span class="lineno">  107</span>&#160;<span class="keyword">static</span> GLvoid ReSizeGLScene(visualize_application::OnResize onResize, <span class="keywordtype">void</span>* user_ptr, GLsizei width, GLsizei height)        <span class="comment">// Resize And Initialize The GL Window</span></div>
<div class="line"><a name="l00108"></a><span class="lineno">  108</span>&#160;{</div>
<div class="line"><a name="l00109"></a><span class="lineno">  109</span>&#160;    <span class="keywordflow">if</span> (height==0)                                      <span class="comment">// Prevent A Divide By Zero By</span></div>
<div class="line"><a name="l00110"></a><span class="lineno">  110</span>&#160;    {</div>
<div class="line"><a name="l00111"></a><span class="lineno">  111</span>&#160;        height=1;                                       <span class="comment">// Making Height Equal One</span></div>
<div class="line"><a name="l00112"></a><span class="lineno">  112</span>&#160;    }</div>
<div class="line"><a name="l00113"></a><span class="lineno">  113</span>&#160;</div>
<div class="line"><a name="l00114"></a><span class="lineno">  114</span>&#160;    <span class="keywordflow">if</span>(width == 0)</div>
<div class="line"><a name="l00115"></a><span class="lineno">  115</span>&#160;    {</div>
<div class="line"><a name="l00116"></a><span class="lineno">  116</span>&#160;        width = 1;</div>
<div class="line"><a name="l00117"></a><span class="lineno">  117</span>&#160;    }</div>
<div class="line"><a name="l00118"></a><span class="lineno">  118</span>&#160;</div>
<div class="line"><a name="l00119"></a><span class="lineno">  119</span>&#160;    glViewport(0,0,width,height);                       <span class="comment">// Reset The Current Viewport</span></div>
<div class="line"><a name="l00120"></a><span class="lineno">  120</span>&#160;</div>
<div class="line"><a name="l00121"></a><span class="lineno">  121</span>&#160;    glMatrixMode(GL_PROJECTION);                        <span class="comment">// Select The Projection Matrix</span></div>
<div class="line"><a name="l00122"></a><span class="lineno">  122</span>&#160;    glLoadIdentity();                                   <span class="comment">// Reset The Projection Matrix</span></div>
<div class="line"><a name="l00123"></a><span class="lineno">  123</span>&#160;</div>
<div class="line"><a name="l00124"></a><span class="lineno">  124</span>&#160;    <span class="comment">// Calculate The Aspect Ratio Of The Window</span></div>
<div class="line"><a name="l00125"></a><span class="lineno">  125</span>&#160;    gluPerspective(45.0f,(GLfloat)width/(GLfloat)height, 0.1f, 100.0f);</div>
<div class="line"><a name="l00126"></a><span class="lineno">  126</span>&#160;</div>
<div class="line"><a name="l00127"></a><span class="lineno">  127</span>&#160;    glMatrixMode(GL_MODELVIEW);                         <span class="comment">// Select The Modelview Matrix</span></div>
<div class="line"><a name="l00128"></a><span class="lineno">  128</span>&#160;    glLoadIdentity();                                   <span class="comment">// Reset The Modelview Matrix</span></div>
<div class="line"><a name="l00129"></a><span class="lineno">  129</span>&#160;</div>
<div class="line"><a name="l00130"></a><span class="lineno">  130</span>&#160;</div>
<div class="line"><a name="l00131"></a><span class="lineno">  131</span>&#160;     <span class="keywordflow">if</span>(onResize)</div>
<div class="line"><a name="l00132"></a><span class="lineno">  132</span>&#160;     {</div>
<div class="line"><a name="l00133"></a><span class="lineno">  133</span>&#160;        onResize(user_ptr, (<span class="keywordtype">int</span>)width, (<span class="keywordtype">int</span>)height);</div>
<div class="line"><a name="l00134"></a><span class="lineno">  134</span>&#160;     }</div>
<div class="line"><a name="l00135"></a><span class="lineno">  135</span>&#160;</div>
<div class="line"><a name="l00136"></a><span class="lineno">  136</span>&#160;</div>
<div class="line"><a name="l00137"></a><span class="lineno">  137</span>&#160;}</div>
<div class="line"><a name="l00138"></a><span class="lineno">  138</span>&#160;</div>
<div class="line"><a name="l00139"></a><span class="lineno">  139</span>&#160;<span class="keyword">static</span> <span class="keywordtype">int</span> InitGL(GLvoid)                                       <span class="comment">// All Setup For OpenGL Goes Here</span></div>
<div class="line"><a name="l00140"></a><span class="lineno">  140</span>&#160;{</div>
<div class="line"><a name="l00141"></a><span class="lineno">  141</span>&#160;    glShadeModel(GL_SMOOTH);                            <span class="comment">// Enable Smooth Shading</span></div>
<div class="line"><a name="l00142"></a><span class="lineno">  142</span>&#160;    glClearColor(0.0f, 0.0f, 0.7f, 0.5f);               <span class="comment">// Black Background</span></div>
<div class="line"><a name="l00143"></a><span class="lineno">  143</span>&#160;    glClearDepth(1.0f);                                 <span class="comment">// Depth Buffer Setup</span></div>
<div class="line"><a name="l00144"></a><span class="lineno">  144</span>&#160;    glEnable(GL_DEPTH_TEST);                            <span class="comment">// Enables Depth Testing</span></div>
<div class="line"><a name="l00145"></a><span class="lineno">  145</span>&#160;    glDepthFunc(GL_LEQUAL);                             <span class="comment">// The Type Of Depth Testing To Do</span></div>
<div class="line"><a name="l00146"></a><span class="lineno">  146</span>&#160;    glHint(GL_PERSPECTIVE_CORRECTION_HINT, GL_NICEST);  <span class="comment">// Really Nice Perspective Calculations</span></div>
<div class="line"><a name="l00147"></a><span class="lineno">  147</span>&#160;</div>
<div class="line"><a name="l00148"></a><span class="lineno">  148</span>&#160;    BuildFont();                                        <span class="comment">// Build The Font</span></div>
<div class="line"><a name="l00149"></a><span class="lineno">  149</span>&#160;</div>
<div class="line"><a name="l00150"></a><span class="lineno">  150</span>&#160;    <span class="keywordflow">return</span> TRUE;                                        <span class="comment">// Initialization Went OK</span></div>
<div class="line"><a name="l00151"></a><span class="lineno">  151</span>&#160;}</div>
<div class="line"><a name="l00152"></a><span class="lineno">  152</span>&#160;</div>
<div class="line"><a name="l00153"></a><span class="lineno">  153</span>&#160;                      <span class="comment">// GLvoid,</span></div>
<div class="line"><a name="l00154"></a><span class="lineno">  154</span>&#160;<span class="keyword">static</span> <span class="keywordtype">int</span> DrawGLScene(visualize_application::OnDrawFrame3D onDraw, </div>
<div class="line"><a name="l00155"></a><span class="lineno">  155</span>&#160;                       visualize_application::OnDrawFrame2D onDraw2d, </div>
<div class="line"><a name="l00156"></a><span class="lineno">  156</span>&#160;                       <span class="keywordtype">void</span>* user_ptr )  <span class="comment">// Here&#39;s Where We Do All The Drawing</span></div>
<div class="line"><a name="l00157"></a><span class="lineno">  157</span>&#160;{</div>
<div class="line"><a name="l00158"></a><span class="lineno">  158</span>&#160;</div>
<div class="line"><a name="l00159"></a><span class="lineno">  159</span>&#160;    glClearColor(0.0f, 0.0f , 1.0f , 0.0f );</div>
<div class="line"><a name="l00160"></a><span class="lineno">  160</span>&#160;    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); <span class="comment">// Clear Screen And Depth Buffer</span></div>
<div class="line"><a name="l00161"></a><span class="lineno">  161</span>&#160;</div>
<div class="line"><a name="l00162"></a><span class="lineno">  162</span>&#160;    glMatrixMode(GL_MODELVIEW);</div>
<div class="line"><a name="l00163"></a><span class="lineno">  163</span>&#160;    glLoadIdentity();</div>
<div class="line"><a name="l00164"></a><span class="lineno">  164</span>&#160;</div>
<div class="line"><a name="l00165"></a><span class="lineno">  165</span>&#160;    glMatrixMode(GL_PROJECTION);</div>
<div class="line"><a name="l00166"></a><span class="lineno">  166</span>&#160;    glLoadIdentity();</div>
<div class="line"><a name="l00167"></a><span class="lineno">  167</span>&#160;</div>
<div class="line"><a name="l00168"></a><span class="lineno">  168</span>&#160;</div>
<div class="line"><a name="l00169"></a><span class="lineno">  169</span>&#160;</div>
<div class="line"><a name="l00170"></a><span class="lineno">  170</span>&#160;</div>
<div class="line"><a name="l00171"></a><span class="lineno">  171</span>&#160;</div>
<div class="line"><a name="l00172"></a><span class="lineno">  172</span>&#160;   <span class="keywordtype">float</span>  delta =   GetCurrSystemTime() - g_time;</div>
<div class="line"><a name="l00173"></a><span class="lineno">  173</span>&#160;   g_time =  GetCurrSystemTime();</div>
<div class="line"><a name="l00174"></a><span class="lineno">  174</span>&#160;</div>
<div class="line"><a name="l00175"></a><span class="lineno">  175</span>&#160;   visualize_application::DrawFrameParams dfp(&amp;g_drawer);</div>
<div class="line"><a name="l00176"></a><span class="lineno">  176</span>&#160;   dfp.time = g_time;</div>
<div class="line"><a name="l00177"></a><span class="lineno">  177</span>&#160;   dfp.delta = delta;</div>
<div class="line"><a name="l00178"></a><span class="lineno">  178</span>&#160;   dfp.hWnd = hWnd;</div>
<div class="line"><a name="l00179"></a><span class="lineno">  179</span>&#160;</div>
<div class="line"><a name="l00180"></a><span class="lineno">  180</span>&#160;   <span class="keywordflow">if</span>(onDraw)</div>
<div class="line"><a name="l00181"></a><span class="lineno">  181</span>&#160;   {</div>
<div class="line"><a name="l00182"></a><span class="lineno">  182</span>&#160;    <span class="keywordflow">if</span>( !onDraw(user_ptr, &amp;dfp) )</div>
<div class="line"><a name="l00183"></a><span class="lineno">  183</span>&#160;    {</div>
<div class="line"><a name="l00184"></a><span class="lineno">  184</span>&#160;        <span class="keywordflow">return</span> FALSE;</div>
<div class="line"><a name="l00185"></a><span class="lineno">  185</span>&#160;    }</div>
<div class="line"><a name="l00186"></a><span class="lineno">  186</span>&#160;</div>
<div class="line"><a name="l00187"></a><span class="lineno">  187</span>&#160;   }</div>
<div class="line"><a name="l00188"></a><span class="lineno">  188</span>&#160;</div>
<div class="line"><a name="l00189"></a><span class="lineno">  189</span>&#160;   glClear( GL_DEPTH_BUFFER_BIT );</div>
<div class="line"><a name="l00190"></a><span class="lineno">  190</span>&#160;   gluOrtho2D(0.0 , 0.0 , 600, 800  );</div>
<div class="line"><a name="l00191"></a><span class="lineno">  191</span>&#160;</div>
<div class="line"><a name="l00192"></a><span class="lineno">  192</span>&#160;</div>
<div class="line"><a name="l00193"></a><span class="lineno">  193</span>&#160;   <span class="keywordflow">if</span>(onDraw2d)</div>
<div class="line"><a name="l00194"></a><span class="lineno">  194</span>&#160;   {</div>
<div class="line"><a name="l00195"></a><span class="lineno">  195</span>&#160;       <span class="keywordflow">if</span>( !onDraw2d(user_ptr    ) )</div>
<div class="line"><a name="l00196"></a><span class="lineno">  196</span>&#160;       {</div>
<div class="line"><a name="l00197"></a><span class="lineno">  197</span>&#160;           <span class="keywordflow">return</span> FALSE;</div>
<div class="line"><a name="l00198"></a><span class="lineno">  198</span>&#160;       }</div>
<div class="line"><a name="l00199"></a><span class="lineno">  199</span>&#160;</div>
<div class="line"><a name="l00200"></a><span class="lineno">  200</span>&#160;   }</div>
<div class="line"><a name="l00201"></a><span class="lineno">  201</span>&#160;</div>
<div class="line"><a name="l00202"></a><span class="lineno">  202</span>&#160;</div>
<div class="line"><a name="l00203"></a><span class="lineno">  203</span>&#160;    <span class="comment">//glTranslatef(0.0f,0.0f,-1.0f);                        // Move One Unit Into The Screen</span></div>
<div class="line"><a name="l00204"></a><span class="lineno">  204</span>&#160;</div>
<div class="line"><a name="l00205"></a><span class="lineno">  205</span>&#160;</div>
<div class="line"><a name="l00206"></a><span class="lineno">  206</span>&#160;    <span class="comment">// Pulsing Colors Based On Text Position</span></div>
<div class="line"><a name="l00207"></a><span class="lineno">  207</span>&#160;    <span class="comment">//glColor3f(1.0f*float(cos(cnt1)),1.0f*float(sin(cnt2)),1.0f-0.5f*float(cos(cnt1+cnt2)));</span></div>
<div class="line"><a name="l00208"></a><span class="lineno">  208</span>&#160;</div>
<div class="line"><a name="l00209"></a><span class="lineno">  209</span>&#160;    <span class="comment">// Position The Text On The Screen</span></div>
<div class="line"><a name="l00210"></a><span class="lineno">  210</span>&#160;</div>
<div class="line"><a name="l00211"></a><span class="lineno">  211</span>&#160;<span class="comment">//  glRasterPos2f(</span></div>
<div class="line"><a name="l00212"></a><span class="lineno">  212</span>&#160;<span class="comment">//      -0.45f+0.05f*float(cos( cnt1)),</span></div>
<div class="line"><a name="l00213"></a><span class="lineno">  213</span>&#160;<span class="comment">//      0.32f*float(sin( cnt2)));</span></div>
<div class="line"><a name="l00214"></a><span class="lineno">  214</span>&#160;</div>
<div class="line"><a name="l00215"></a><span class="lineno">  215</span>&#160; <span class="comment">// glPrint(&quot;Active OpenGL Text With NeHe - %7.2f&quot;, cnt1);  // Print GL Text To The Screen</span></div>
<div class="line"><a name="l00216"></a><span class="lineno">  216</span>&#160;<span class="comment">//  cnt1+=0.051f;                                       // Increase The First Counter</span></div>
<div class="line"><a name="l00217"></a><span class="lineno">  217</span>&#160;<span class="comment">//  cnt2+=0.005f;                                       // Increase The First Counter</span></div>
<div class="line"><a name="l00218"></a><span class="lineno">  218</span>&#160;    <span class="keywordflow">return</span> TRUE;                                        <span class="comment">// Everything Went OK</span></div>
<div class="line"><a name="l00219"></a><span class="lineno">  219</span>&#160;}</div>
<div class="line"><a name="l00220"></a><span class="lineno">  220</span>&#160;</div>
<div class="line"><a name="l00221"></a><span class="lineno">  221</span>&#160;<span class="keyword">static</span> GLvoid KillGLWindow(GLvoid)                              <span class="comment">// Properly Kill The Window</span></div>
<div class="line"><a name="l00222"></a><span class="lineno">  222</span>&#160;{</div>
<div class="line"><a name="l00223"></a><span class="lineno">  223</span>&#160;    <span class="keywordflow">if</span> (fullscreen)                                     <span class="comment">// Are We In Fullscreen Mode?</span></div>
<div class="line"><a name="l00224"></a><span class="lineno">  224</span>&#160;    {</div>
<div class="line"><a name="l00225"></a><span class="lineno">  225</span>&#160;        ChangeDisplaySettings(NULL,0);                  <span class="comment">// If So Switch Back To The Desktop</span></div>
<div class="line"><a name="l00226"></a><span class="lineno">  226</span>&#160;        ShowCursor(TRUE);                               <span class="comment">// Show Mouse Pointer</span></div>
<div class="line"><a name="l00227"></a><span class="lineno">  227</span>&#160;    }</div>
<div class="line"><a name="l00228"></a><span class="lineno">  228</span>&#160;</div>
<div class="line"><a name="l00229"></a><span class="lineno">  229</span>&#160;    <span class="keywordflow">if</span> (hRC)                                            <span class="comment">// Do We Have A Rendering Context?</span></div>
<div class="line"><a name="l00230"></a><span class="lineno">  230</span>&#160;    {</div>
<div class="line"><a name="l00231"></a><span class="lineno">  231</span>&#160;        <span class="keywordflow">if</span> (!wglMakeCurrent(NULL,NULL))                 <span class="comment">// Are We Able To Release The DC And RC Contexts?</span></div>
<div class="line"><a name="l00232"></a><span class="lineno">  232</span>&#160;        {</div>
<div class="line"><a name="l00233"></a><span class="lineno">  233</span>&#160;            MessageBoxA(NULL,<span class="stringliteral">&quot;Release Of DC And RC Failed.&quot;</span>,<span class="stringliteral">&quot;SHUTDOWN ERROR&quot;</span>,MB_OK | MB_ICONINFORMATION);</div>
<div class="line"><a name="l00234"></a><span class="lineno">  234</span>&#160;        }</div>
<div class="line"><a name="l00235"></a><span class="lineno">  235</span>&#160;</div>
<div class="line"><a name="l00236"></a><span class="lineno">  236</span>&#160;        <span class="keywordflow">if</span> (!wglDeleteContext(hRC))                     <span class="comment">// Are We Able To Delete The RC?</span></div>
<div class="line"><a name="l00237"></a><span class="lineno">  237</span>&#160;        {</div>
<div class="line"><a name="l00238"></a><span class="lineno">  238</span>&#160;            MessageBoxA(NULL,<span class="stringliteral">&quot;Release Rendering Context Failed.&quot;</span>,<span class="stringliteral">&quot;SHUTDOWN ERROR&quot;</span>,MB_OK | MB_ICONINFORMATION);</div>
<div class="line"><a name="l00239"></a><span class="lineno">  239</span>&#160;        }</div>
<div class="line"><a name="l00240"></a><span class="lineno">  240</span>&#160;        hRC=NULL;                                       <span class="comment">// Set RC To NULL</span></div>
<div class="line"><a name="l00241"></a><span class="lineno">  241</span>&#160;    }</div>
<div class="line"><a name="l00242"></a><span class="lineno">  242</span>&#160;</div>
<div class="line"><a name="l00243"></a><span class="lineno">  243</span>&#160;    <span class="keywordflow">if</span> (hDC &amp;&amp; !ReleaseDC(hWnd,hDC))                    <span class="comment">// Are We Able To Release The DC</span></div>
<div class="line"><a name="l00244"></a><span class="lineno">  244</span>&#160;    {</div>
<div class="line"><a name="l00245"></a><span class="lineno">  245</span>&#160;        MessageBoxA(NULL,<span class="stringliteral">&quot;Release Device Context Failed.&quot;</span>,<span class="stringliteral">&quot;SHUTDOWN ERROR&quot;</span>,MB_OK | MB_ICONINFORMATION);</div>
<div class="line"><a name="l00246"></a><span class="lineno">  246</span>&#160;        hDC=NULL;                                       <span class="comment">// Set DC To NULL</span></div>
<div class="line"><a name="l00247"></a><span class="lineno">  247</span>&#160;    }</div>
<div class="line"><a name="l00248"></a><span class="lineno">  248</span>&#160;</div>
<div class="line"><a name="l00249"></a><span class="lineno">  249</span>&#160;    <span class="keywordflow">if</span> (hWnd &amp;&amp; !DestroyWindow(hWnd))                   <span class="comment">// Are We Able To Destroy The Window?</span></div>
<div class="line"><a name="l00250"></a><span class="lineno">  250</span>&#160;    {</div>
<div class="line"><a name="l00251"></a><span class="lineno">  251</span>&#160;        MessageBoxA(NULL,<span class="stringliteral">&quot;Could Not Release hWnd.&quot;</span>,<span class="stringliteral">&quot;SHUTDOWN ERROR&quot;</span>,MB_OK | MB_ICONINFORMATION);</div>
<div class="line"><a name="l00252"></a><span class="lineno">  252</span>&#160;        hWnd=NULL;                                      <span class="comment">// Set hWnd To NULL</span></div>
<div class="line"><a name="l00253"></a><span class="lineno">  253</span>&#160;    }</div>
<div class="line"><a name="l00254"></a><span class="lineno">  254</span>&#160;</div>
<div class="line"><a name="l00255"></a><span class="lineno">  255</span>&#160;    <span class="keywordflow">if</span> (!UnregisterClassA(<span class="stringliteral">&quot;OpenGL&quot;</span>,hInstance))          <span class="comment">// Are We Able To Unregister Class</span></div>
<div class="line"><a name="l00256"></a><span class="lineno">  256</span>&#160;    {</div>
<div class="line"><a name="l00257"></a><span class="lineno">  257</span>&#160;        MessageBoxA(NULL,<span class="stringliteral">&quot;Could Not Unregister Class.&quot;</span>,<span class="stringliteral">&quot;SHUTDOWN ERROR&quot;</span>,MB_OK | MB_ICONINFORMATION);</div>
<div class="line"><a name="l00258"></a><span class="lineno">  258</span>&#160;        hInstance=NULL;                                 <span class="comment">// Set hInstance To NULL</span></div>
<div class="line"><a name="l00259"></a><span class="lineno">  259</span>&#160;    }</div>
<div class="line"><a name="l00260"></a><span class="lineno">  260</span>&#160;</div>
<div class="line"><a name="l00261"></a><span class="lineno">  261</span>&#160;    KillFont();</div>
<div class="line"><a name="l00262"></a><span class="lineno">  262</span>&#160;}</div>
<div class="line"><a name="l00263"></a><span class="lineno">  263</span>&#160;</div>
<div class="line"><a name="l00264"></a><span class="lineno">  264</span>&#160;<span class="comment">/*  This Code Creates Our OpenGL Window.  Parameters Are:                   *</span></div>
<div class="line"><a name="l00265"></a><span class="lineno">  265</span>&#160;<span class="comment"> *  title           - Title To Appear At The Top Of The Window              *</span></div>
<div class="line"><a name="l00266"></a><span class="lineno">  266</span>&#160;<span class="comment"> *  width           - Width Of The GL Window Or Fullscreen Mode             *</span></div>
<div class="line"><a name="l00267"></a><span class="lineno">  267</span>&#160;<span class="comment"> *  height          - Height Of The GL Window Or Fullscreen Mode            *</span></div>
<div class="line"><a name="l00268"></a><span class="lineno">  268</span>&#160;<span class="comment"> *  bits            - Number Of Bits To Use For Color (8/16/24/32)          *</span></div>
<div class="line"><a name="l00269"></a><span class="lineno">  269</span>&#160;<span class="comment"> *  fullscreenflag  - Use Fullscreen Mode (TRUE) Or Windowed Mode (FALSE)   */</span></div>
<div class="line"><a name="l00270"></a><span class="lineno">  270</span>&#160; </div>
<div class="line"><a name="l00271"></a><span class="lineno">  271</span>&#160;</div>
<div class="line"><a name="l00272"></a><span class="lineno">  272</span>&#160;<span class="keyword">static</span> BOOL CreateGLWindow(<span class="keyword">const</span> <span class="keywordtype">char</span>* title, <span class="keywordtype">int</span> width, <span class="keywordtype">int</span> height, <span class="keywordtype">int</span> bits, <span class="keywordtype">bool</span> fullscreenflag)</div>
<div class="line"><a name="l00273"></a><span class="lineno">  273</span>&#160;{</div>
<div class="line"><a name="l00274"></a><span class="lineno">  274</span>&#160;    GLuint      PixelFormat;            <span class="comment">// Holds The Results After Searching For A Match</span></div>
<div class="line"><a name="l00275"></a><span class="lineno">  275</span>&#160;    WNDCLASSW   wc;                     <span class="comment">// Windows Class Structure</span></div>
<div class="line"><a name="l00276"></a><span class="lineno">  276</span>&#160;    DWORD       dwExStyle;              <span class="comment">// Window Extended Style</span></div>
<div class="line"><a name="l00277"></a><span class="lineno">  277</span>&#160;    DWORD       dwStyle;                <span class="comment">// Window Style</span></div>
<div class="line"><a name="l00278"></a><span class="lineno">  278</span>&#160;    RECT        WindowRect;             <span class="comment">// Grabs Rectangle Upper Left / Lower Right Values</span></div>
<div class="line"><a name="l00279"></a><span class="lineno">  279</span>&#160;    WindowRect.left=(long)0;            <span class="comment">// Set Left Value To 0</span></div>
<div class="line"><a name="l00280"></a><span class="lineno">  280</span>&#160;    WindowRect.right=(long)width;       <span class="comment">// Set Right Value To Requested Width</span></div>
<div class="line"><a name="l00281"></a><span class="lineno">  281</span>&#160;    WindowRect.top=(long)0;             <span class="comment">// Set Top Value To 0</span></div>
<div class="line"><a name="l00282"></a><span class="lineno">  282</span>&#160;    WindowRect.bottom=(long)height;     <span class="comment">// Set Bottom Value To Requested Height</span></div>
<div class="line"><a name="l00283"></a><span class="lineno">  283</span>&#160;</div>
<div class="line"><a name="l00284"></a><span class="lineno">  284</span>&#160;    fullscreen=fullscreenflag;          <span class="comment">// Set The Global Fullscreen Flag</span></div>
<div class="line"><a name="l00285"></a><span class="lineno">  285</span>&#160;</div>
<div class="line"><a name="l00286"></a><span class="lineno">  286</span>&#160;    hInstance           = GetModuleHandle(NULL);                <span class="comment">// Grab An Instance For Our Window</span></div>
<div class="line"><a name="l00287"></a><span class="lineno">  287</span>&#160;    wc.style            = CS_HREDRAW | CS_VREDRAW | CS_OWNDC;   <span class="comment">// Redraw On Size, And Own DC For Window.</span></div>
<div class="line"><a name="l00288"></a><span class="lineno">  288</span>&#160;    wc.lpfnWndProc      = (WNDPROC) WndProc;                    <span class="comment">// WndProc Handles Messages</span></div>
<div class="line"><a name="l00289"></a><span class="lineno">  289</span>&#160;    wc.cbClsExtra       = 0;                                    <span class="comment">// No Extra Window Data</span></div>
<div class="line"><a name="l00290"></a><span class="lineno">  290</span>&#160;    wc.cbWndExtra       = 0;                                    <span class="comment">// No Extra Window Data</span></div>
<div class="line"><a name="l00291"></a><span class="lineno">  291</span>&#160;    wc.hInstance        = hInstance;                            <span class="comment">// Set The Instance</span></div>
<div class="line"><a name="l00292"></a><span class="lineno">  292</span>&#160;    wc.hIcon            = LoadIcon(NULL, IDI_WINLOGO);          <span class="comment">// Load The Default Icon</span></div>
<div class="line"><a name="l00293"></a><span class="lineno">  293</span>&#160;    wc.hCursor          = LoadCursor(NULL, IDC_ARROW);          <span class="comment">// Load The Arrow Pointer</span></div>
<div class="line"><a name="l00294"></a><span class="lineno">  294</span>&#160;    wc.hbrBackground    = NULL;                                 <span class="comment">// No Background Required For GL</span></div>
<div class="line"><a name="l00295"></a><span class="lineno">  295</span>&#160;    wc.lpszMenuName     = NULL;                                 <span class="comment">// We Don&#39;t Want A Menu</span></div>
<div class="line"><a name="l00296"></a><span class="lineno">  296</span>&#160;    wc.lpszClassName    = L<span class="stringliteral">&quot;OpenGL&quot;</span>;                                <span class="comment">// Set The Class Name</span></div>
<div class="line"><a name="l00297"></a><span class="lineno">  297</span>&#160;</div>
<div class="line"><a name="l00298"></a><span class="lineno">  298</span>&#160;    <span class="keywordflow">if</span> (!RegisterClassW(&amp;wc))                                   <span class="comment">// Attempt To Register The Window Class</span></div>
<div class="line"><a name="l00299"></a><span class="lineno">  299</span>&#160;    {</div>
<div class="line"><a name="l00300"></a><span class="lineno">  300</span>&#160;        MessageBoxA(NULL,<span class="stringliteral">&quot;Failed To Register The Window Class.&quot;</span>,<span class="stringliteral">&quot;ERROR&quot;</span>,MB_OK|MB_ICONEXCLAMATION);</div>
<div class="line"><a name="l00301"></a><span class="lineno">  301</span>&#160;        <span class="keywordflow">return</span> FALSE;                                           <span class="comment">// Return FALSE</span></div>
<div class="line"><a name="l00302"></a><span class="lineno">  302</span>&#160;    }</div>
<div class="line"><a name="l00303"></a><span class="lineno">  303</span>&#160;    </div>
<div class="line"><a name="l00304"></a><span class="lineno">  304</span>&#160;    <span class="keywordflow">if</span> (fullscreen)                                             <span class="comment">// Attempt Fullscreen Mode?</span></div>
<div class="line"><a name="l00305"></a><span class="lineno">  305</span>&#160;    {</div>
<div class="line"><a name="l00306"></a><span class="lineno">  306</span>&#160;        DEVMODE dmScreenSettings;                               <span class="comment">// Device Mode</span></div>
<div class="line"><a name="l00307"></a><span class="lineno">  307</span>&#160;        memset(&amp;dmScreenSettings,0,<span class="keyword">sizeof</span>(dmScreenSettings));   <span class="comment">// Makes Sure Memory&#39;s Cleared</span></div>
<div class="line"><a name="l00308"></a><span class="lineno">  308</span>&#160;        dmScreenSettings.dmSize=<span class="keyword">sizeof</span>(dmScreenSettings);       <span class="comment">// Size Of The Devmode Structure</span></div>
<div class="line"><a name="l00309"></a><span class="lineno">  309</span>&#160;        dmScreenSettings.dmPelsWidth    = width;                <span class="comment">// Selected Screen Width</span></div>
<div class="line"><a name="l00310"></a><span class="lineno">  310</span>&#160;        dmScreenSettings.dmPelsHeight   = height;               <span class="comment">// Selected Screen Height</span></div>
<div class="line"><a name="l00311"></a><span class="lineno">  311</span>&#160;        dmScreenSettings.dmBitsPerPel   = bits;                 <span class="comment">// Selected Bits Per Pixel</span></div>
<div class="line"><a name="l00312"></a><span class="lineno">  312</span>&#160;        dmScreenSettings.dmFields=DM_BITSPERPEL|DM_PELSWIDTH|DM_PELSHEIGHT;</div>
<div class="line"><a name="l00313"></a><span class="lineno">  313</span>&#160;</div>
<div class="line"><a name="l00314"></a><span class="lineno">  314</span>&#160;        <span class="comment">// Try To Set Selected Mode And Get Results.  NOTE: CDS_FULLSCREEN Gets Rid Of Start Bar.</span></div>
<div class="line"><a name="l00315"></a><span class="lineno">  315</span>&#160;        <span class="keywordflow">if</span> (ChangeDisplaySettings(&amp;dmScreenSettings,CDS_FULLSCREEN)!=DISP_CHANGE_SUCCESSFUL)</div>
<div class="line"><a name="l00316"></a><span class="lineno">  316</span>&#160;        {</div>
<div class="line"><a name="l00317"></a><span class="lineno">  317</span>&#160;            <span class="comment">// If The Mode Fails, Offer Two Options.  Quit Or Use Windowed Mode.</span></div>
<div class="line"><a name="l00318"></a><span class="lineno">  318</span>&#160;            <span class="keywordflow">if</span> (MessageBoxA(NULL,<span class="stringliteral">&quot;The Requested Fullscreen Mode Is Not Supported By\nYour Video Card. Use Windowed Mode Instead?&quot;</span>,<span class="stringliteral">&quot;NeHe GL&quot;</span>,MB_YESNO|MB_ICONEXCLAMATION)==IDYES)</div>
<div class="line"><a name="l00319"></a><span class="lineno">  319</span>&#160;            {</div>
<div class="line"><a name="l00320"></a><span class="lineno">  320</span>&#160;                fullscreen=FALSE;       <span class="comment">// Windowed Mode Selected.  Fullscreen = FALSE</span></div>
<div class="line"><a name="l00321"></a><span class="lineno">  321</span>&#160;            }</div>
<div class="line"><a name="l00322"></a><span class="lineno">  322</span>&#160;            <span class="keywordflow">else</span></div>
<div class="line"><a name="l00323"></a><span class="lineno">  323</span>&#160;            {</div>
<div class="line"><a name="l00324"></a><span class="lineno">  324</span>&#160;                <span class="comment">// Pop Up A Message Box Letting User Know The Program Is Closing.</span></div>
<div class="line"><a name="l00325"></a><span class="lineno">  325</span>&#160;                MessageBoxA(NULL,<span class="stringliteral">&quot;Program Will Now Close.&quot;</span>,<span class="stringliteral">&quot;ERROR&quot;</span>,MB_OK|MB_ICONSTOP);</div>
<div class="line"><a name="l00326"></a><span class="lineno">  326</span>&#160;                <span class="keywordflow">return</span> FALSE;                                   <span class="comment">// Return FALSE</span></div>
<div class="line"><a name="l00327"></a><span class="lineno">  327</span>&#160;            }</div>
<div class="line"><a name="l00328"></a><span class="lineno">  328</span>&#160;        }</div>
<div class="line"><a name="l00329"></a><span class="lineno">  329</span>&#160;    }</div>
<div class="line"><a name="l00330"></a><span class="lineno">  330</span>&#160;</div>
<div class="line"><a name="l00331"></a><span class="lineno">  331</span>&#160;    <span class="keywordflow">if</span> (fullscreen)                                             <span class="comment">// Are We Still In Fullscreen Mode?</span></div>
<div class="line"><a name="l00332"></a><span class="lineno">  332</span>&#160;    {</div>
<div class="line"><a name="l00333"></a><span class="lineno">  333</span>&#160;        dwExStyle=WS_EX_APPWINDOW;                              <span class="comment">// Window Extended Style</span></div>
<div class="line"><a name="l00334"></a><span class="lineno">  334</span>&#160;        dwStyle=WS_POPUP;                                       <span class="comment">// Windows Style</span></div>
<div class="line"><a name="l00335"></a><span class="lineno">  335</span>&#160;        ShowCursor(FALSE);                                      <span class="comment">// Hide Mouse Pointer</span></div>
<div class="line"><a name="l00336"></a><span class="lineno">  336</span>&#160;    }</div>
<div class="line"><a name="l00337"></a><span class="lineno">  337</span>&#160;    <span class="keywordflow">else</span></div>
<div class="line"><a name="l00338"></a><span class="lineno">  338</span>&#160;    {</div>
<div class="line"><a name="l00339"></a><span class="lineno">  339</span>&#160;        dwExStyle=WS_EX_APPWINDOW | WS_EX_WINDOWEDGE;           <span class="comment">// Window Extended Style</span></div>
<div class="line"><a name="l00340"></a><span class="lineno">  340</span>&#160;        dwStyle=WS_OVERLAPPEDWINDOW;                            <span class="comment">// Windows Style</span></div>
<div class="line"><a name="l00341"></a><span class="lineno">  341</span>&#160;    }</div>
<div class="line"><a name="l00342"></a><span class="lineno">  342</span>&#160;        </div>
<div class="line"><a name="l00343"></a><span class="lineno">  343</span>&#160;    AdjustWindowRectEx(&amp;WindowRect, dwStyle, FALSE, dwExStyle);     <span class="comment">// Adjust Window To True Requested Size</span></div>
<div class="line"><a name="l00344"></a><span class="lineno">  344</span>&#160;</div>
<div class="line"><a name="l00345"></a><span class="lineno">  345</span>&#160;    <span class="comment">// Create The Window</span></div>
<div class="line"><a name="l00346"></a><span class="lineno">  346</span>&#160;    <span class="keywordflow">if</span> (!(hWnd=CreateWindowExA( dwExStyle,                          <span class="comment">// Extended Style For The Window</span></div>
<div class="line"><a name="l00347"></a><span class="lineno">  347</span>&#160;                                <span class="stringliteral">&quot;OpenGL&quot;</span>,                           <span class="comment">// Class Name</span></div>
<div class="line"><a name="l00348"></a><span class="lineno">  348</span>&#160;                                 title,                             <span class="comment">// Window Title</span></div>
<div class="line"><a name="l00349"></a><span class="lineno">  349</span>&#160;                                dwStyle |                           <span class="comment">// Defined Window Style</span></div>
<div class="line"><a name="l00350"></a><span class="lineno">  350</span>&#160;                                WS_CLIPSIBLINGS |                   <span class="comment">// Required Window Style</span></div>
<div class="line"><a name="l00351"></a><span class="lineno">  351</span>&#160;                                WS_CLIPCHILDREN,                    <span class="comment">// Required Window Style</span></div>
<div class="line"><a name="l00352"></a><span class="lineno">  352</span>&#160;                                0, 0,                               <span class="comment">// Window Position</span></div>
<div class="line"><a name="l00353"></a><span class="lineno">  353</span>&#160;                                WindowRect.right-WindowRect.left,   <span class="comment">// Calculate Window Width</span></div>
<div class="line"><a name="l00354"></a><span class="lineno">  354</span>&#160;                                WindowRect.bottom-WindowRect.top,   <span class="comment">// Calculate Window Height</span></div>
<div class="line"><a name="l00355"></a><span class="lineno">  355</span>&#160;                                NULL,                               <span class="comment">// No Parent Window</span></div>
<div class="line"><a name="l00356"></a><span class="lineno">  356</span>&#160;                                NULL,                               <span class="comment">// No Menu</span></div>
<div class="line"><a name="l00357"></a><span class="lineno">  357</span>&#160;                                hInstance,                          <span class="comment">// Instance</span></div>
<div class="line"><a name="l00358"></a><span class="lineno">  358</span>&#160;                                NULL)))                             <span class="comment">// Dont Pass Anything To WM_CREATE</span></div>
<div class="line"><a name="l00359"></a><span class="lineno">  359</span>&#160;    {</div>
<div class="line"><a name="l00360"></a><span class="lineno">  360</span>&#160;        KillGLWindow();                             <span class="comment">// Reset The Display</span></div>
<div class="line"><a name="l00361"></a><span class="lineno">  361</span>&#160;        MessageBoxA(NULL,<span class="stringliteral">&quot;Window Creation Error.&quot;</span>,<span class="stringliteral">&quot;ERROR&quot;</span>,MB_OK|MB_ICONEXCLAMATION);</div>
<div class="line"><a name="l00362"></a><span class="lineno">  362</span>&#160;        <span class="keywordflow">return</span> FALSE;                               <span class="comment">// Return FALSE</span></div>
<div class="line"><a name="l00363"></a><span class="lineno">  363</span>&#160;    }</div>
<div class="line"><a name="l00364"></a><span class="lineno">  364</span>&#160;</div>
<div class="line"><a name="l00365"></a><span class="lineno">  365</span>&#160;    <span class="keyword">static</span>  PIXELFORMATDESCRIPTOR pfd=              <span class="comment">// pfd Tells Windows How We Want Things To Be</span></div>
<div class="line"><a name="l00366"></a><span class="lineno">  366</span>&#160;    {</div>
<div class="line"><a name="l00367"></a><span class="lineno">  367</span>&#160;        <span class="keyword">sizeof</span>(PIXELFORMATDESCRIPTOR),              <span class="comment">// Size Of This Pixel Format Descriptor</span></div>
<div class="line"><a name="l00368"></a><span class="lineno">  368</span>&#160;        1,                                          <span class="comment">// Version Number</span></div>
<div class="line"><a name="l00369"></a><span class="lineno">  369</span>&#160;        PFD_DRAW_TO_WINDOW |                        <span class="comment">// Format Must Support Window</span></div>
<div class="line"><a name="l00370"></a><span class="lineno">  370</span>&#160;        PFD_SUPPORT_OPENGL |                        <span class="comment">// Format Must Support OpenGL</span></div>
<div class="line"><a name="l00371"></a><span class="lineno">  371</span>&#160;        PFD_DOUBLEBUFFER,                           <span class="comment">// Must Support Double Buffering</span></div>
<div class="line"><a name="l00372"></a><span class="lineno">  372</span>&#160;        PFD_TYPE_RGBA,                              <span class="comment">// Request An RGBA Format</span></div>
<div class="line"><a name="l00373"></a><span class="lineno">  373</span>&#160;        bits,                                       <span class="comment">// Select Our Color Depth</span></div>
<div class="line"><a name="l00374"></a><span class="lineno">  374</span>&#160;        0, 0, 0, 0, 0, 0,                           <span class="comment">// Color Bits Ignored</span></div>
<div class="line"><a name="l00375"></a><span class="lineno">  375</span>&#160;        0,                                          <span class="comment">// No Alpha Buffer</span></div>
<div class="line"><a name="l00376"></a><span class="lineno">  376</span>&#160;        0,                                          <span class="comment">// Shift Bit Ignored</span></div>
<div class="line"><a name="l00377"></a><span class="lineno">  377</span>&#160;        0,                                          <span class="comment">// No Accumulation Buffer</span></div>
<div class="line"><a name="l00378"></a><span class="lineno">  378</span>&#160;        0, 0, 0, 0,                                 <span class="comment">// Accumulation Bits Ignored</span></div>
<div class="line"><a name="l00379"></a><span class="lineno">  379</span>&#160;        16,                                         <span class="comment">// 16Bit Z-Buffer (Depth Buffer)  </span></div>
<div class="line"><a name="l00380"></a><span class="lineno">  380</span>&#160;        0,                                          <span class="comment">// No Stencil Buffer</span></div>
<div class="line"><a name="l00381"></a><span class="lineno">  381</span>&#160;        0,                                          <span class="comment">// No Auxiliary Buffer</span></div>
<div class="line"><a name="l00382"></a><span class="lineno">  382</span>&#160;        PFD_MAIN_PLANE,                             <span class="comment">// Main Drawing Layer</span></div>
<div class="line"><a name="l00383"></a><span class="lineno">  383</span>&#160;        0,                                          <span class="comment">// Reserved</span></div>
<div class="line"><a name="l00384"></a><span class="lineno">  384</span>&#160;        0, 0, 0                                     <span class="comment">// Layer Masks Ignored</span></div>
<div class="line"><a name="l00385"></a><span class="lineno">  385</span>&#160;    };</div>
<div class="line"><a name="l00386"></a><span class="lineno">  386</span>&#160;    </div>
<div class="line"><a name="l00387"></a><span class="lineno">  387</span>&#160;    <span class="keywordflow">if</span> (!(hDC=GetDC(hWnd)))                         <span class="comment">// Did We Get A Device Context?</span></div>
<div class="line"><a name="l00388"></a><span class="lineno">  388</span>&#160;    {</div>
<div class="line"><a name="l00389"></a><span class="lineno">  389</span>&#160;        KillGLWindow();                             <span class="comment">// Reset The Display</span></div>
<div class="line"><a name="l00390"></a><span class="lineno">  390</span>&#160;        MessageBoxA(NULL,<span class="stringliteral">&quot;Can&#39;t Create A GL Device Context.&quot;</span>,<span class="stringliteral">&quot;ERROR&quot;</span>,MB_OK|MB_ICONEXCLAMATION);</div>
<div class="line"><a name="l00391"></a><span class="lineno">  391</span>&#160;        <span class="keywordflow">return</span> FALSE;                               <span class="comment">// Return FALSE</span></div>
<div class="line"><a name="l00392"></a><span class="lineno">  392</span>&#160;    }</div>
<div class="line"><a name="l00393"></a><span class="lineno">  393</span>&#160;</div>
<div class="line"><a name="l00394"></a><span class="lineno">  394</span>&#160;    <span class="keywordflow">if</span> (!(PixelFormat=ChoosePixelFormat(hDC,&amp;pfd))) <span class="comment">// Did Windows Find A Matching Pixel Format?</span></div>
<div class="line"><a name="l00395"></a><span class="lineno">  395</span>&#160;    {</div>
<div class="line"><a name="l00396"></a><span class="lineno">  396</span>&#160;        KillGLWindow();                             <span class="comment">// Reset The Display</span></div>
<div class="line"><a name="l00397"></a><span class="lineno">  397</span>&#160;        MessageBoxA(NULL,<span class="stringliteral">&quot;Can&#39;t Find A Suitable PixelFormat.&quot;</span>,<span class="stringliteral">&quot;ERROR&quot;</span>,MB_OK|MB_ICONEXCLAMATION);</div>
<div class="line"><a name="l00398"></a><span class="lineno">  398</span>&#160;        <span class="keywordflow">return</span> FALSE;                               <span class="comment">// Return FALSE</span></div>
<div class="line"><a name="l00399"></a><span class="lineno">  399</span>&#160;    }</div>
<div class="line"><a name="l00400"></a><span class="lineno">  400</span>&#160;</div>
<div class="line"><a name="l00401"></a><span class="lineno">  401</span>&#160;    <span class="keywordflow">if</span>(!SetPixelFormat(hDC,PixelFormat,&amp;pfd))       <span class="comment">// Are We Able To Set The Pixel Format?</span></div>
<div class="line"><a name="l00402"></a><span class="lineno">  402</span>&#160;    {</div>
<div class="line"><a name="l00403"></a><span class="lineno">  403</span>&#160;        KillGLWindow();                             <span class="comment">// Reset The Display</span></div>
<div class="line"><a name="l00404"></a><span class="lineno">  404</span>&#160;        MessageBoxA(NULL,<span class="stringliteral">&quot;Can&#39;t Set The PixelFormat.&quot;</span>,<span class="stringliteral">&quot;ERROR&quot;</span>,MB_OK|MB_ICONEXCLAMATION);</div>
<div class="line"><a name="l00405"></a><span class="lineno">  405</span>&#160;        <span class="keywordflow">return</span> FALSE;                               <span class="comment">// Return FALSE</span></div>
<div class="line"><a name="l00406"></a><span class="lineno">  406</span>&#160;    }</div>
<div class="line"><a name="l00407"></a><span class="lineno">  407</span>&#160;</div>
<div class="line"><a name="l00408"></a><span class="lineno">  408</span>&#160;    <span class="keywordflow">if</span> (!(hRC=wglCreateContext(hDC)))               <span class="comment">// Are We Able To Get A Rendering Context?</span></div>
<div class="line"><a name="l00409"></a><span class="lineno">  409</span>&#160;    {</div>
<div class="line"><a name="l00410"></a><span class="lineno">  410</span>&#160;        KillGLWindow();                             <span class="comment">// Reset The Display</span></div>
<div class="line"><a name="l00411"></a><span class="lineno">  411</span>&#160;        MessageBoxA(NULL,<span class="stringliteral">&quot;Can&#39;t Create A GL Rendering Context.&quot;</span>,<span class="stringliteral">&quot;ERROR&quot;</span>,MB_OK|MB_ICONEXCLAMATION);</div>
<div class="line"><a name="l00412"></a><span class="lineno">  412</span>&#160;        <span class="keywordflow">return</span> FALSE;                               <span class="comment">// Return FALSE</span></div>
<div class="line"><a name="l00413"></a><span class="lineno">  413</span>&#160;    }</div>
<div class="line"><a name="l00414"></a><span class="lineno">  414</span>&#160;</div>
<div class="line"><a name="l00415"></a><span class="lineno">  415</span>&#160;    <span class="keywordflow">if</span>(!wglMakeCurrent(hDC,hRC))                    <span class="comment">// Try To Activate The Rendering Context</span></div>
<div class="line"><a name="l00416"></a><span class="lineno">  416</span>&#160;    {</div>
<div class="line"><a name="l00417"></a><span class="lineno">  417</span>&#160;        KillGLWindow();                             <span class="comment">// Reset The Display</span></div>
<div class="line"><a name="l00418"></a><span class="lineno">  418</span>&#160;        MessageBoxA(NULL,<span class="stringliteral">&quot;Can&#39;t Activate The GL Rendering Context.&quot;</span>,<span class="stringliteral">&quot;ERROR&quot;</span>,MB_OK|MB_ICONEXCLAMATION);</div>
<div class="line"><a name="l00419"></a><span class="lineno">  419</span>&#160;        <span class="keywordflow">return</span> FALSE;                               <span class="comment">// Return FALSE</span></div>
<div class="line"><a name="l00420"></a><span class="lineno">  420</span>&#160;    }</div>
<div class="line"><a name="l00421"></a><span class="lineno">  421</span>&#160;</div>
<div class="line"><a name="l00422"></a><span class="lineno">  422</span>&#160;    ShowWindow(hWnd,SW_SHOW);                       <span class="comment">// Show The Window</span></div>
<div class="line"><a name="l00423"></a><span class="lineno">  423</span>&#160;    SetForegroundWindow(hWnd);                      <span class="comment">// Slightly Higher Priority</span></div>
<div class="line"><a name="l00424"></a><span class="lineno">  424</span>&#160;    SetFocus(hWnd);                                 <span class="comment">// Sets Keyboard Focus To The Window</span></div>
<div class="line"><a name="l00425"></a><span class="lineno">  425</span>&#160;    ReSizeGLScene( NULL , NULL ,  width, height);                   <span class="comment">// Set Up Our Perspective GL Screen</span></div>
<div class="line"><a name="l00426"></a><span class="lineno">  426</span>&#160;</div>
<div class="line"><a name="l00427"></a><span class="lineno">  427</span>&#160;    <span class="keywordflow">if</span> (!InitGL())                                  <span class="comment">// Initialize Our Newly Created GL Window</span></div>
<div class="line"><a name="l00428"></a><span class="lineno">  428</span>&#160;    {</div>
<div class="line"><a name="l00429"></a><span class="lineno">  429</span>&#160;        KillGLWindow();                             <span class="comment">// Reset The Display</span></div>
<div class="line"><a name="l00430"></a><span class="lineno">  430</span>&#160;        MessageBoxA(NULL,<span class="stringliteral">&quot;Initialization Failed.&quot;</span>,<span class="stringliteral">&quot;ERROR&quot;</span>,MB_OK|MB_ICONEXCLAMATION);</div>
<div class="line"><a name="l00431"></a><span class="lineno">  431</span>&#160;        <span class="keywordflow">return</span> FALSE;                               <span class="comment">// Return FALSE</span></div>
<div class="line"><a name="l00432"></a><span class="lineno">  432</span>&#160;    }</div>
<div class="line"><a name="l00433"></a><span class="lineno">  433</span>&#160;</div>
<div class="line"><a name="l00434"></a><span class="lineno">  434</span>&#160;    <span class="keywordflow">return</span> TRUE;                                    <span class="comment">// Success</span></div>
<div class="line"><a name="l00435"></a><span class="lineno">  435</span>&#160;}</div>
<div class="line"><a name="l00436"></a><span class="lineno">  436</span>&#160;</div>
<div class="line"><a name="l00437"></a><span class="lineno">  437</span>&#160;<span class="keyword">static</span> LRESULT CALLBACK WndProc(    HWND    hWnd,           <span class="comment">// Handle For This Window</span></div>
<div class="line"><a name="l00438"></a><span class="lineno">  438</span>&#160;                            UINT    uMsg,           <span class="comment">// Message For This Window</span></div>
<div class="line"><a name="l00439"></a><span class="lineno">  439</span>&#160;                            WPARAM  wParam,         <span class="comment">// Additional Message Information</span></div>
<div class="line"><a name="l00440"></a><span class="lineno">  440</span>&#160;                            LPARAM  lParam)         <span class="comment">// Additional Message Information</span></div>
<div class="line"><a name="l00441"></a><span class="lineno">  441</span>&#160;{</div>
<div class="line"><a name="l00442"></a><span class="lineno">  442</span>&#160;    <span class="keywordflow">switch</span> (uMsg)                                   <span class="comment">// Check For Windows Messages</span></div>
<div class="line"><a name="l00443"></a><span class="lineno">  443</span>&#160;    {</div>
<div class="line"><a name="l00444"></a><span class="lineno">  444</span>&#160;        <span class="keywordflow">case</span> WM_ACTIVATE:                           <span class="comment">// Watch For Window Activate Message</span></div>
<div class="line"><a name="l00445"></a><span class="lineno">  445</span>&#160;        {</div>
<div class="line"><a name="l00446"></a><span class="lineno">  446</span>&#160;            <span class="keywordflow">if</span> (!HIWORD(wParam))                    <span class="comment">// Check Minimization State</span></div>
<div class="line"><a name="l00447"></a><span class="lineno">  447</span>&#160;            {</div>
<div class="line"><a name="l00448"></a><span class="lineno">  448</span>&#160;                active=TRUE;                        <span class="comment">// Program Is Active</span></div>
<div class="line"><a name="l00449"></a><span class="lineno">  449</span>&#160;            }</div>
<div class="line"><a name="l00450"></a><span class="lineno">  450</span>&#160;            <span class="keywordflow">else</span></div>
<div class="line"><a name="l00451"></a><span class="lineno">  451</span>&#160;            {</div>
<div class="line"><a name="l00452"></a><span class="lineno">  452</span>&#160;                active=FALSE;                       <span class="comment">// Program Is No Longer Active</span></div>
<div class="line"><a name="l00453"></a><span class="lineno">  453</span>&#160;            }</div>
<div class="line"><a name="l00454"></a><span class="lineno">  454</span>&#160;</div>
<div class="line"><a name="l00455"></a><span class="lineno">  455</span>&#160;            <span class="keywordflow">return</span> 0;                               <span class="comment">// Return To The Message Loop</span></div>
<div class="line"><a name="l00456"></a><span class="lineno">  456</span>&#160;        }</div>
<div class="line"><a name="l00457"></a><span class="lineno">  457</span>&#160;</div>
<div class="line"><a name="l00458"></a><span class="lineno">  458</span>&#160;        <span class="keywordflow">case</span> WM_SYSCOMMAND:                         <span class="comment">// Intercept System Commands</span></div>
<div class="line"><a name="l00459"></a><span class="lineno">  459</span>&#160;        {</div>
<div class="line"><a name="l00460"></a><span class="lineno">  460</span>&#160;            <span class="keywordflow">switch</span> (wParam)                         <span class="comment">// Check System Calls</span></div>
<div class="line"><a name="l00461"></a><span class="lineno">  461</span>&#160;            {</div>
<div class="line"><a name="l00462"></a><span class="lineno">  462</span>&#160;                <span class="keywordflow">case</span> SC_SCREENSAVE:                 <span class="comment">// Screensaver Trying To Start?</span></div>
<div class="line"><a name="l00463"></a><span class="lineno">  463</span>&#160;                <span class="keywordflow">case</span> SC_MONITORPOWER:               <span class="comment">// Monitor Trying To Enter Powersave?</span></div>
<div class="line"><a name="l00464"></a><span class="lineno">  464</span>&#160;                <span class="keywordflow">return</span> 0;                           <span class="comment">// Prevent From Happening</span></div>
<div class="line"><a name="l00465"></a><span class="lineno">  465</span>&#160;            }</div>
<div class="line"><a name="l00466"></a><span class="lineno">  466</span>&#160;            <span class="keywordflow">break</span>;                                  <span class="comment">// Exit</span></div>
<div class="line"><a name="l00467"></a><span class="lineno">  467</span>&#160;        }</div>
<div class="line"><a name="l00468"></a><span class="lineno">  468</span>&#160;</div>
<div class="line"><a name="l00469"></a><span class="lineno">  469</span>&#160;        <span class="keywordflow">case</span> WM_CLOSE:                              <span class="comment">// Did We Receive A Close Message?</span></div>
<div class="line"><a name="l00470"></a><span class="lineno">  470</span>&#160;        {</div>
<div class="line"><a name="l00471"></a><span class="lineno">  471</span>&#160;            PostQuitMessage(0);                     <span class="comment">// Send A Quit Message</span></div>
<div class="line"><a name="l00472"></a><span class="lineno">  472</span>&#160;            <span class="keywordflow">return</span> 0;                               <span class="comment">// Jump Back</span></div>
<div class="line"><a name="l00473"></a><span class="lineno">  473</span>&#160;        }</div>
<div class="line"><a name="l00474"></a><span class="lineno">  474</span>&#160;</div>
<div class="line"><a name="l00475"></a><span class="lineno">  475</span>&#160;        <span class="keywordflow">case</span> WM_KEYDOWN:                            <span class="comment">// Is A Key Being Held Down?</span></div>
<div class="line"><a name="l00476"></a><span class="lineno">  476</span>&#160;        {</div>
<div class="line"><a name="l00477"></a><span class="lineno">  477</span>&#160;            keys[wParam] = TRUE;                    <span class="comment">// If So, Mark It As TRUE</span></div>
<div class="line"><a name="l00478"></a><span class="lineno">  478</span>&#160;            <span class="keywordflow">return</span> 0;                               <span class="comment">// Jump Back</span></div>
<div class="line"><a name="l00479"></a><span class="lineno">  479</span>&#160;        }</div>
<div class="line"><a name="l00480"></a><span class="lineno">  480</span>&#160;</div>
<div class="line"><a name="l00481"></a><span class="lineno">  481</span>&#160;        <span class="keywordflow">case</span> WM_KEYUP:                              <span class="comment">// Has A Key Been Released?</span></div>
<div class="line"><a name="l00482"></a><span class="lineno">  482</span>&#160;        {</div>
<div class="line"><a name="l00483"></a><span class="lineno">  483</span>&#160;            keys[wParam] = FALSE;                   <span class="comment">// If So, Mark It As FALSE</span></div>
<div class="line"><a name="l00484"></a><span class="lineno">  484</span>&#160;            <span class="keywordflow">return</span> 0;                               <span class="comment">// Jump Back</span></div>
<div class="line"><a name="l00485"></a><span class="lineno">  485</span>&#160;        }</div>
<div class="line"><a name="l00486"></a><span class="lineno">  486</span>&#160;</div>
<div class="line"><a name="l00487"></a><span class="lineno">  487</span>&#160;        <span class="keywordflow">case</span> WM_SIZE:                               <span class="comment">// Resize The OpenGL Window</span></div>
<div class="line"><a name="l00488"></a><span class="lineno">  488</span>&#160;        {</div>
<div class="line"><a name="l00489"></a><span class="lineno">  489</span>&#160;            ReSizeGLScene(g_OnResize, g_user_ptr,  LOWORD(lParam),HIWORD(lParam));  <span class="comment">// LoWord=Width, HiWord=Height</span></div>
<div class="line"><a name="l00490"></a><span class="lineno">  490</span>&#160;            <span class="keywordflow">return</span> 0;                               <span class="comment">// Jump Back</span></div>
<div class="line"><a name="l00491"></a><span class="lineno">  491</span>&#160;        }</div>
<div class="line"><a name="l00492"></a><span class="lineno">  492</span>&#160;    }</div>
<div class="line"><a name="l00493"></a><span class="lineno">  493</span>&#160;</div>
<div class="line"><a name="l00494"></a><span class="lineno">  494</span>&#160;    <span class="comment">// Pass All Unhandled Messages To DefWindowProc</span></div>
<div class="line"><a name="l00495"></a><span class="lineno">  495</span>&#160;    <span class="keywordflow">return</span> DefWindowProc(hWnd,uMsg,wParam,lParam);</div>
<div class="line"><a name="l00496"></a><span class="lineno">  496</span>&#160;}</div>
<div class="line"><a name="l00497"></a><span class="lineno">  497</span>&#160;</div>
<div class="line"><a name="l00498"></a><span class="lineno">  498</span>&#160;<span class="comment">/*</span></div>
<div class="line"><a name="l00499"></a><span class="lineno">  499</span>&#160;<span class="comment">int WINAPI WinMain( HINSTANCE   hInstance,          // Instance</span></div>
<div class="line"><a name="l00500"></a><span class="lineno">  500</span>&#160;<span class="comment">                    HINSTANCE   hPrevInstance,      // Previous Instance</span></div>
<div class="line"><a name="l00501"></a><span class="lineno">  501</span>&#160;<span class="comment">                    LPSTR       lpCmdLine,          // Command Line Parameters</span></div>
<div class="line"><a name="l00502"></a><span class="lineno">  502</span>&#160;<span class="comment">                    int         nCmdShow)           // Window Show State</span></div>
<div class="line"><a name="l00503"></a><span class="lineno">  503</span>&#160;<span class="comment"></span></div>
<div class="line"><a name="l00504"></a><span class="lineno">  504</span>&#160;<span class="comment">*/</span></div>
<div class="line"><a name="l00505"></a><span class="lineno">  505</span>&#160;</div>
<div class="line"><a name="l00506"></a><span class="lineno">  506</span>&#160; </div>
<div class="line"><a name="l00507"></a><span class="lineno">  507</span>&#160; </div>
<div class="line"><a name="l00508"></a><span class="lineno">  508</span>&#160;</div>
<div class="line"><a name="l00509"></a><span class="lineno">  509</span>&#160;</div>
<div class="line"><a name="l00510"></a><span class="lineno">  510</span>&#160; <span class="comment">//===============================================================</span></div>
<div class="line"><a name="l00511"></a><span class="lineno">  511</span>&#160;</div>
<div class="line"><a name="l00512"></a><span class="lineno">  512</span>&#160;</div>
<div class="line"><a name="l00513"></a><span class="lineno">  513</span>&#160;}</div>
<div class="line"><a name="l00514"></a><span class="lineno">  514</span>&#160;<span class="comment">// end namespace </span></div>
<div class="line"><a name="l00515"></a><span class="lineno">  515</span>&#160; </div>
<div class="line"><a name="l00516"></a><span class="lineno">  516</span>&#160;</div>
<div class="line"><a name="l00517"></a><span class="lineno">  517</span>&#160;</div>
<div class="line"><a name="l00518"></a><span class="lineno">  518</span>&#160;<span class="keywordtype">void</span> visualize_application::Draw_line(<span class="keywordtype">int</span> x, <span class="keywordtype">int</span> y, <span class="keyword">const</span> <span class="keywordtype">char</span>* text)</div>
<div class="line"><a name="l00519"></a><span class="lineno">  519</span>&#160;{</div>
<div class="line"><a name="l00520"></a><span class="lineno">  520</span>&#160;</div>
<div class="line"><a name="l00521"></a><span class="lineno">  521</span>&#160;    glPushAttrib(GL_LIST_BIT);                          <span class="comment">// Pushes The Display List Bits</span></div>
<div class="line"><a name="l00522"></a><span class="lineno">  522</span>&#160;    glListBase(detail_visappl::base - 32);                              <span class="comment">// Sets The Base Character to 32</span></div>
<div class="line"><a name="l00523"></a><span class="lineno">  523</span>&#160;    glCallLists( (GLsizei)strlen(text), GL_UNSIGNED_BYTE, text);    <span class="comment">// Draws The Display List Text</span></div>
<div class="line"><a name="l00524"></a><span class="lineno">  524</span>&#160;    glPopAttrib();</div>
<div class="line"><a name="l00525"></a><span class="lineno">  525</span>&#160;</div>
<div class="line"><a name="l00526"></a><span class="lineno">  526</span>&#160;    <span class="keywordflow">return</span>;</div>
<div class="line"><a name="l00527"></a><span class="lineno">  527</span>&#160;</div>
<div class="line"><a name="l00528"></a><span class="lineno">  528</span>&#160;<span class="preprocessor">#if 0</span></div>
<div class="line"><a name="l00529"></a><span class="lineno">  529</span>&#160;<span class="preprocessor"></span>    glTranslatef(0.0f,0.0f,-1.0f);                      <span class="comment">// Move One Unit Into The Screen</span></div>
<div class="line"><a name="l00530"></a><span class="lineno">  530</span>&#160;</div>
<div class="line"><a name="l00531"></a><span class="lineno">  531</span>&#160;</div>
<div class="line"><a name="l00532"></a><span class="lineno">  532</span>&#160;     Pulsing Colors Based On Text Position</div>
<div class="line"><a name="l00533"></a><span class="lineno">  533</span>&#160;    glColor3f(1.0f*<span class="keywordtype">float</span>(cos(cnt1)),1.0f*<span class="keywordtype">float</span>(sin(cnt2)),1.0f-0.5f*<span class="keywordtype">float</span>(cos(cnt1+cnt2)));</div>
<div class="line"><a name="l00534"></a><span class="lineno">  534</span>&#160;</div>
<div class="line"><a name="l00535"></a><span class="lineno">  535</span>&#160;     Position The Text On The Screen</div>
<div class="line"><a name="l00536"></a><span class="lineno">  536</span>&#160;</div>
<div class="line"><a name="l00537"></a><span class="lineno">  537</span>&#160;        glRasterPos2f(</div>
<div class="line"><a name="l00538"></a><span class="lineno">  538</span>&#160;            -0.45f+0.05f*<span class="keywordtype">float</span>(cos( cnt1)),</div>
<div class="line"><a name="l00539"></a><span class="lineno">  539</span>&#160;            0.32f*<span class="keywordtype">float</span>(sin( cnt2)));</div>
<div class="line"><a name="l00540"></a><span class="lineno">  540</span>&#160;</div>
<div class="line"><a name="l00541"></a><span class="lineno">  541</span>&#160;        glPrint(<span class="stringliteral">&quot;Active OpenGL Text With NeHe - %7.2f&quot;</span>, cnt1);  <span class="comment">// Print GL Text To The Screen</span></div>
<div class="line"><a name="l00542"></a><span class="lineno">  542</span>&#160;        <span class="comment">//cnt1+=0.051f;                                     // Increase The First Counter</span></div>
<div class="line"><a name="l00543"></a><span class="lineno">  543</span>&#160;        <span class="comment">//cnt2+=0.005f;                                     // Increase The First Counter</span></div>
<div class="line"><a name="l00544"></a><span class="lineno">  544</span>&#160;</div>
<div class="line"><a name="l00545"></a><span class="lineno">  545</span>&#160;<span class="preprocessor">#endif </span></div>
<div class="line"><a name="l00546"></a><span class="lineno">  546</span>&#160;<span class="preprocessor"></span>}</div>
<div class="line"><a name="l00547"></a><span class="lineno">  547</span>&#160;</div>
<div class="line"><a name="l00548"></a><span class="lineno">  548</span>&#160;</div>
<div class="line"><a name="l00549"></a><span class="lineno">  549</span>&#160;<span class="keywordtype">int</span> visualize_application::Run(</div>
<div class="line"><a name="l00550"></a><span class="lineno">  550</span>&#160;        visualize_application::OnDrawFrame3D onDraw,  </div>
<div class="line"><a name="l00551"></a><span class="lineno">  551</span>&#160;        visualize_application::OnDrawFrame2D onDraw2d,  </div>
<div class="line"><a name="l00552"></a><span class="lineno">  552</span>&#160;        visualize_application::OnResize onResize, <span class="keywordtype">void</span>* user_ptr)</div>
<div class="line"><a name="l00553"></a><span class="lineno">  553</span>&#160;{</div>
<div class="line"><a name="l00554"></a><span class="lineno">  554</span>&#160; </div>
<div class="line"><a name="l00555"></a><span class="lineno">  555</span>&#160;    detail_visappl::g_OnResize = onResize;</div>
<div class="line"><a name="l00556"></a><span class="lineno">  556</span>&#160;    detail_visappl::g_user_ptr = user_ptr;</div>
<div class="line"><a name="l00557"></a><span class="lineno">  557</span>&#160;</div>
<div class="line"><a name="l00558"></a><span class="lineno">  558</span>&#160;    MSG     msg;         <span class="comment">// Windows Message Structure</span></div>
<div class="line"><a name="l00559"></a><span class="lineno">  559</span>&#160;    BOOL    done = FALSE;    <span class="comment">// Bool Variable To Exit Loop</span></div>
<div class="line"><a name="l00560"></a><span class="lineno">  560</span>&#160;</div>
<div class="line"><a name="l00561"></a><span class="lineno">  561</span>&#160;</div>
<div class="line"><a name="l00562"></a><span class="lineno">  562</span>&#160;</div>
<div class="line"><a name="l00563"></a><span class="lineno">  563</span>&#160;<span class="preprocessor">#if 0</span></div>
<div class="line"><a name="l00564"></a><span class="lineno">  564</span>&#160;<span class="preprocessor"></span>    <span class="comment">// Ask The User Which Screen Mode They Prefer</span></div>
<div class="line"><a name="l00565"></a><span class="lineno">  565</span>&#160;    <span class="keywordflow">if</span> (MessageBoxA(NULL,<span class="stringliteral">&quot;Would You Like To Run In Fullscreen Mode?&quot;</span>, <span class="stringliteral">&quot;Start FullScreen?&quot;</span>,MB_YESNO|MB_ICONQUESTION)==IDNO)</div>
<div class="line"><a name="l00566"></a><span class="lineno">  566</span>&#160;    {</div>
<div class="line"><a name="l00567"></a><span class="lineno">  567</span>&#160;        detail_visappl::fullscreen=FALSE;    <span class="comment">// Windowed Mode</span></div>
<div class="line"><a name="l00568"></a><span class="lineno">  568</span>&#160;    }</div>
<div class="line"><a name="l00569"></a><span class="lineno">  569</span>&#160;<span class="preprocessor">#endif </span></div>
<div class="line"><a name="l00570"></a><span class="lineno">  570</span>&#160;<span class="preprocessor"></span></div>
<div class="line"><a name="l00571"></a><span class="lineno">  571</span>&#160;    detail_visappl::fullscreen=FALSE;</div>
<div class="line"><a name="l00572"></a><span class="lineno">  572</span>&#160;</div>
<div class="line"><a name="l00573"></a><span class="lineno">  573</span>&#160;</div>
<div class="line"><a name="l00574"></a><span class="lineno">  574</span>&#160;    <span class="comment">// Create Our OpenGL Window</span></div>
<div class="line"><a name="l00575"></a><span class="lineno">  575</span>&#160;    <span class="keywordflow">if</span> (!detail_visappl::CreateGLWindow(<span class="stringliteral">&quot;visualize application&quot;</span>,</div>
<div class="line"><a name="l00576"></a><span class="lineno">  576</span>&#160;        800,</div>
<div class="line"><a name="l00577"></a><span class="lineno">  577</span>&#160;        600,</div>
<div class="line"><a name="l00578"></a><span class="lineno">  578</span>&#160;        16, detail_visappl::fullscreen))</div>
<div class="line"><a name="l00579"></a><span class="lineno">  579</span>&#160;    {</div>
<div class="line"><a name="l00580"></a><span class="lineno">  580</span>&#160;        <span class="keywordflow">return</span> 0;                                   <span class="comment">// Quit If Window Was Not Created</span></div>
<div class="line"><a name="l00581"></a><span class="lineno">  581</span>&#160;    }</div>
<div class="line"><a name="l00582"></a><span class="lineno">  582</span>&#160;</div>
<div class="line"><a name="l00583"></a><span class="lineno">  583</span>&#160;    <span class="keywordflow">while</span>(!done)                                    <span class="comment">// Loop That Runs While done=FALSE</span></div>
<div class="line"><a name="l00584"></a><span class="lineno">  584</span>&#160;    {</div>
<div class="line"><a name="l00585"></a><span class="lineno">  585</span>&#160;        <span class="keywordflow">if</span> (PeekMessage(&amp;msg,NULL,0,0,PM_REMOVE))   <span class="comment">// Is There A Message Waiting?</span></div>
<div class="line"><a name="l00586"></a><span class="lineno">  586</span>&#160;        {</div>
<div class="line"><a name="l00587"></a><span class="lineno">  587</span>&#160;            <span class="keywordflow">if</span> (msg.message==WM_QUIT)               <span class="comment">// Have We Received A Quit Message?</span></div>
<div class="line"><a name="l00588"></a><span class="lineno">  588</span>&#160;            {</div>
<div class="line"><a name="l00589"></a><span class="lineno">  589</span>&#160;                done=TRUE;                          <span class="comment">// If So done=TRUE</span></div>
<div class="line"><a name="l00590"></a><span class="lineno">  590</span>&#160;            }</div>
<div class="line"><a name="l00591"></a><span class="lineno">  591</span>&#160;            <span class="keywordflow">else</span>                                    <span class="comment">// If Not, Deal With Window Messages</span></div>
<div class="line"><a name="l00592"></a><span class="lineno">  592</span>&#160;            {</div>
<div class="line"><a name="l00593"></a><span class="lineno">  593</span>&#160;                TranslateMessage(&amp;msg);             <span class="comment">// Translate The Message</span></div>
<div class="line"><a name="l00594"></a><span class="lineno">  594</span>&#160;                DispatchMessage(&amp;msg);              <span class="comment">// Dispatch The Message</span></div>
<div class="line"><a name="l00595"></a><span class="lineno">  595</span>&#160;            }</div>
<div class="line"><a name="l00596"></a><span class="lineno">  596</span>&#160;        }</div>
<div class="line"><a name="l00597"></a><span class="lineno">  597</span>&#160;        <span class="keywordflow">else</span>                                        <span class="comment">// If There Are No Messages</span></div>
<div class="line"><a name="l00598"></a><span class="lineno">  598</span>&#160;        {</div>
<div class="line"><a name="l00599"></a><span class="lineno">  599</span>&#160;            <span class="comment">// Draw The Scene.  Watch For ESC Key And Quit Messages From DrawGLScene()</span></div>
<div class="line"><a name="l00600"></a><span class="lineno">  600</span>&#160;            <span class="keywordflow">if</span> ((detail_visappl::active &amp;&amp; !detail_visappl::DrawGLScene(onDraw, onDraw2d, user_ptr) ) || detail_visappl::keys[VK_ESCAPE])   <span class="comment">// Active?  Was There A Quit Received?</span></div>
<div class="line"><a name="l00601"></a><span class="lineno">  601</span>&#160;            {</div>
<div class="line"><a name="l00602"></a><span class="lineno">  602</span>&#160;                done=TRUE;                          <span class="comment">// ESC or DrawGLScene Signalled A Quit</span></div>
<div class="line"><a name="l00603"></a><span class="lineno">  603</span>&#160;            }</div>
<div class="line"><a name="l00604"></a><span class="lineno">  604</span>&#160;            <span class="keywordflow">else</span>                                    <span class="comment">// Not Time To Quit, Update Screen</span></div>
<div class="line"><a name="l00605"></a><span class="lineno">  605</span>&#160;            {</div>
<div class="line"><a name="l00606"></a><span class="lineno">  606</span>&#160;                SwapBuffers(detail_visappl::hDC);                   <span class="comment">// Swap Buffers (Double Buffering)</span></div>
<div class="line"><a name="l00607"></a><span class="lineno">  607</span>&#160;            }</div>
<div class="line"><a name="l00608"></a><span class="lineno">  608</span>&#160;</div>
<div class="line"><a name="l00609"></a><span class="lineno">  609</span>&#160;            <span class="keywordflow">if</span> (detail_visappl::keys[VK_F1])                        <span class="comment">// Is F1 Being Pressed?</span></div>
<div class="line"><a name="l00610"></a><span class="lineno">  610</span>&#160;            {</div>
<div class="line"><a name="l00611"></a><span class="lineno">  611</span>&#160;                detail_visappl::keys[VK_F1]=FALSE;                  <span class="comment">// If So Make Key FALSE</span></div>
<div class="line"><a name="l00612"></a><span class="lineno">  612</span>&#160;                detail_visappl::KillGLWindow();                     <span class="comment">// Kill Our Current Window</span></div>
<div class="line"><a name="l00613"></a><span class="lineno">  613</span>&#160;                detail_visappl::fullscreen=!detail_visappl::fullscreen;             <span class="comment">// Toggle Fullscreen / Windowed Mode</span></div>
<div class="line"><a name="l00614"></a><span class="lineno">  614</span>&#160;                <span class="comment">// Recreate Our OpenGL Window</span></div>
<div class="line"><a name="l00615"></a><span class="lineno">  615</span>&#160;                <span class="keywordflow">if</span> (!detail_visappl::CreateGLWindow(<span class="stringliteral">&quot;NeHe&#39;s Bitmap Font Tutorial&quot;</span>,640,480,16,detail_visappl::fullscreen))</div>
<div class="line"><a name="l00616"></a><span class="lineno">  616</span>&#160;                {</div>
<div class="line"><a name="l00617"></a><span class="lineno">  617</span>&#160;                    <span class="keywordflow">return</span> 0;                       <span class="comment">// Quit If Window Was Not Created</span></div>
<div class="line"><a name="l00618"></a><span class="lineno">  618</span>&#160;                }</div>
<div class="line"><a name="l00619"></a><span class="lineno">  619</span>&#160;            }</div>
<div class="line"><a name="l00620"></a><span class="lineno">  620</span>&#160;        }</div>
<div class="line"><a name="l00621"></a><span class="lineno">  621</span>&#160;    }</div>
<div class="line"><a name="l00622"></a><span class="lineno">  622</span>&#160;</div>
<div class="line"><a name="l00623"></a><span class="lineno">  623</span>&#160;    <span class="comment">// Shutdown</span></div>
<div class="line"><a name="l00624"></a><span class="lineno">  624</span>&#160;    detail_visappl::KillGLWindow();                                 <span class="comment">// Kill The Window</span></div>
<div class="line"><a name="l00625"></a><span class="lineno">  625</span>&#160;    <span class="keywordflow">return</span>  (<span class="keywordtype">int</span>)(msg.wParam);                          <span class="comment">// Exit The Program</span></div>
<div class="line"><a name="l00626"></a><span class="lineno">  626</span>&#160;}</div>
<div class="line"><a name="l00627"></a><span class="lineno">  627</span>&#160;</div>
<div class="line"><a name="l00628"></a><span class="lineno">  628</span>&#160;</div>
<div class="line"><a name="l00629"></a><span class="lineno">  629</span>&#160;</div>
<div class="line"><a name="l00630"></a><span class="lineno">  630</span>&#160;<span class="comment">//============================================================</span></div>
<div class="line"><a name="l00631"></a><span class="lineno">  631</span>&#160;</div>
<div class="line"><a name="l00632"></a><span class="lineno">  632</span>&#160;<span class="keyword">namespace </span>test </div>
<div class="line"><a name="l00633"></a><span class="lineno">  633</span>&#160;{</div>
<div class="line"><a name="l00634"></a><span class="lineno">  634</span>&#160;</div>
<div class="line"><a name="l00635"></a><span class="lineno">  635</span>&#160;    <span class="keywordtype">bool</span> __cdecl __OnDrawFrame(<span class="keywordtype">void</span>* user_ptr, visualize_application::DrawFrameParams* <span class="keyword">const</span> dfp )</div>
<div class="line"><a name="l00636"></a><span class="lineno">  636</span>&#160;    {</div>
<div class="line"><a name="l00637"></a><span class="lineno">  637</span>&#160;        printf(<span class="stringliteral">&quot;draw frame \n&quot;</span>);</div>
<div class="line"><a name="l00638"></a><span class="lineno">  638</span>&#160;</div>
<div class="line"><a name="l00639"></a><span class="lineno">  639</span>&#160;</div>
<div class="line"><a name="l00640"></a><span class="lineno">  640</span>&#160;     <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
<div class="line"><a name="l00641"></a><span class="lineno">  641</span>&#160;    }</div>
<div class="line"><a name="l00642"></a><span class="lineno">  642</span>&#160;</div>
<div class="line"><a name="l00643"></a><span class="lineno">  643</span>&#160;    <span class="keywordtype">void</span> __cdecl __OnResize(<span class="keywordtype">void</span>* user_ptr, <span class="keywordtype">int</span> w, <span class="keywordtype">int</span> y)</div>
<div class="line"><a name="l00644"></a><span class="lineno">  644</span>&#160;    {</div>
<div class="line"><a name="l00645"></a><span class="lineno">  645</span>&#160;    </div>
<div class="line"><a name="l00646"></a><span class="lineno">  646</span>&#160;        printf(<span class="stringliteral">&quot;resize window \n&quot;</span>);</div>
<div class="line"><a name="l00647"></a><span class="lineno">  647</span>&#160;    }</div>
<div class="line"><a name="l00648"></a><span class="lineno">  648</span>&#160;</div>
<div class="line"><a name="l00649"></a><span class="lineno">  649</span>&#160;</div>
<div class="line"><a name="l00650"></a><span class="lineno">  650</span>&#160;</div>
<div class="line"><a name="l00651"></a><span class="lineno">  651</span>&#160;</div>
<div class="line"><a name="l00652"></a><span class="lineno">  652</span>&#160;<span class="keywordtype">void</span> do_test_visualize_application()</div>
<div class="line"><a name="l00653"></a><span class="lineno">  653</span>&#160;{</div>
<div class="line"><a name="l00654"></a><span class="lineno">  654</span>&#160; </div>
<div class="line"><a name="l00655"></a><span class="lineno">  655</span>&#160;</div>
<div class="line"><a name="l00656"></a><span class="lineno">  656</span>&#160;    visualize_application::Run(__OnDrawFrame, NULL, __OnResize, NULL);</div>
<div class="line"><a name="l00657"></a><span class="lineno">  657</span>&#160;</div>
<div class="line"><a name="l00658"></a><span class="lineno">  658</span>&#160;</div>
<div class="line"><a name="l00659"></a><span class="lineno">  659</span>&#160;</div>
<div class="line"><a name="l00660"></a><span class="lineno">  660</span>&#160;}</div>
<div class="line"><a name="l00661"></a><span class="lineno">  661</span>&#160;</div>
<div class="line"><a name="l00662"></a><span class="lineno">  662</span>&#160;}</div>
<div class="line"><a name="l00663"></a><span class="lineno">  663</span>&#160; </div>
<div class="line"><a name="l00664"></a><span class="lineno">  664</span>&#160;</div>
<div class="line"><a name="l00665"></a><span class="lineno">  665</span>&#160;}</div>
<div class="line"><a name="l00666"></a><span class="lineno">  666</span>&#160;</div>
<div class="line"><a name="l00667"></a><span class="lineno">  667</span>&#160;</div>
<div class="line"><a name="l00668"></a><span class="lineno">  668</span>&#160;<span class="preprocessor">#pragma warning( pop )</span></div>
<div class="line"><a name="l00669"></a><span class="lineno">  669</span>&#160;<span class="preprocessor"></span></div>
<div class="line"><a name="l00670"></a><span class="lineno">  670</span>&#160;</div>
<div class="line"><a name="l00671"></a><span class="lineno">  671</span>&#160;<span class="preprocessor">#endif //  GBMATH_USE_VISUALIZE_APPLICATION</span></div>
<div class="line"><a name="l00672"></a><span class="lineno">  672</span>&#160;<span class="preprocessor"></span><span class="preprocessor">#endif // WIN32</span></div>
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